Rh(III)-catalyzed synthetic method for indoloquinoline derivatives from readily available indoles and isoxazoles was developed. This annulation procedure undergoes tandem C–H activation, cyclization, and condensation steps. In this domino cyclization reaction, water is an efficient solvent. A catalytically competent five-membered rhodacycle has been isolated and characterized, thus revealing a key intermediate
开发了一种有效的Rh(III)催化合成方法,用于从容易获得的
吲哚和
异恶唑中合成
吲哚喹啉衍
生物。该成环过程经历了串联的C–H活化,环化和缩合步骤。在该多米诺环化反应中,
水是有效的溶剂。具有催化活性的五元罗丹环已被分离和表征,因此揭示了催化循环中的关键中间体。